GB191029504A - Improvements in and relating to the Treatment of Iron or Steel for the Prevention of Oxidation or Rust. - Google Patents

Improvements in and relating to the Treatment of Iron or Steel for the Prevention of Oxidation or Rust.

Info

Publication number
GB191029504A
GB191029504A GB191029504DA GB191029504A GB 191029504 A GB191029504 A GB 191029504A GB 191029504D A GB191029504D A GB 191029504DA GB 191029504 A GB191029504 A GB 191029504A
Authority
GB
United Kingdom
Prior art keywords
iron
hydric
neutralizing
solutions
steel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rudge Whitworth Ltd
Original Assignee
Rudge Whitworth Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rudge Whitworth Ltd filed Critical Rudge Whitworth Ltd
Application granted granted Critical
Publication of GB191029504A publication Critical patent/GB191029504A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
    • C23C22/08—Orthophosphates

Abstract

29,504. Heathcote, H. L., and Rudge- Whitworth, Ltd. Dec. 19. Coating; cleaning.-Relates to processes, of the kind described in Specification 490/08, in which solutions of hydric phosphate or hydric phosphates of iron are used to produce a protective coating upon iron or steel, and consists in the employment of a neutralizing-agent, such as washing-soda, for wholly or partly neutralizing the small amount of free acid usually present in such solutions. Instead of washing-soda, potassium carbonate or hydrate, sodium hydrate, or other substance or mixture of substances capable of rapidly and completely neutralizing free phosphoric acid in solutions of hydric phosphate or hydric phosphates of iron, may be employed. The neutralizing-substance may be added in solid, molten, or dissolved form, and either occasionally, regularly, or continuously. The iron or steel articles, before treatment with the solution, may be freed from rust by immersion in acetic acid or acetic acid vapour.
GB191029504D 1910-12-19 1910-12-19 Improvements in and relating to the Treatment of Iron or Steel for the Prevention of Oxidation or Rust. Expired GB191029504A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191029504T 1910-12-19

Publications (1)

Publication Number Publication Date
GB191029504A true GB191029504A (en) 1911-12-19

Family

ID=32495674

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191029504D Expired GB191029504A (en) 1910-12-19 1910-12-19 Improvements in and relating to the Treatment of Iron or Steel for the Prevention of Oxidation or Rust.

Country Status (1)

Country Link
GB (1) GB191029504A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2499261A (en) * 1945-11-23 1950-02-28 Hall Lab Inc Compositions and methods for depositing amorphous metal-phosphate coatings on metal surfaces

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2499261A (en) * 1945-11-23 1950-02-28 Hall Lab Inc Compositions and methods for depositing amorphous metal-phosphate coatings on metal surfaces

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